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Enable / Lock via DCS
NOTICE!
Control system programming required by customer
Enable / Lock Protos for on-site calibration via DCS.
The DI 1 and DO 4 function blocks are used for communicating with the DCS
(control system programming required by customer).
Step 1:
The user calls the cal menu, for example, on the device. An
“Enable request running ...“ window appears instead of the
passcode prompt. An enable request message is sent to the
DCS.
Step 2:
The DCS confirms the request, still without a decision. Now, a
message window opens on the control system where the plant
operator selects the decision Yes/No. Until a decision is made,
the display reads “Wait for enable signal from DCS ...“
Step 3:
The decision has been made:
YES:
The window disappears and the user is prompted to
enter the passcode (or signature for AuditTrail).
Now, he/she may use the menu.
NO:
A “Request denied!“ window appears and the device
returns to measuring mode.
Step 4:
After the menu system has been exited, the DCS receives a
message that manual operation is terminated.
This erases the authorization.
